Access to clean water may be a right, but it's often hard to come by. Contaminated water kills. Henry Othieno and Saudah Birungi have developed eco-friendly filters for use in schools and homes. They turn dirty lake water into drinking water.
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With clean water scarce in the country, locals use wood and coal to boil and sterilize it. A new climate-friendly filter system hopes to change that.
Very few species of crop are planted around the world. Many potentially useful varieties of many plants are being lost. Seedbanks are key to preserving those that are left.
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